Astatine

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by chana18tps
Last updated 6 years ago

Discipline:
Science
Subject:
Chemical Elements
Grade:
8

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Astatine

Astatine

Bohr Model

Dot Diagram

Symbol: AtAtomic Number: 85Average Atomic Mass: (210.0) amuNumber of Protons: 85Number of ELectrons: 85Number of Neutrons: 125Normal Phase (room temp.): SolidClassification: MetalloidMolar Mass: 210 g/mol

Xe 4f14 5d10 6s2 6p5

Electron Configuration

Melting Point: 302 degrees CelsiusBoiling Point: 337 degrees CelsiusNumber of Valence Electrons: 3Oxidation Number: 1+Isotopes: 37Description: There is no certain physical description of astatine because it has a half life of 8.5 hours. The density is approximately 7 g/cm^3. It is estimated to be black.

Astatine was created by Dale R. Carson, K.R.MacKenzie, and Emilio Segre in 1940 at the University of California. The name "astatine" comes from the Greek word "astatos" which means unstable, because astatine does not have stable isotopes. There are no uses for astatine yet because of the little amounts produced and the short half lives.

Chlorine: AtCl: Astatine chloride

Iodine: AtI: astatine iodide

Hydrogen: HAt: Hydrogen astatide

Bromine: AtBr: Astatine Bromine

Halogens:

Fluorine

Chlorine

Ununseptium

Iodine

Astatine is really rare. Attempt to find some if you dare.


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